Pastéis de Nata, also known as Portuguese custard tarts, are a popular Portuguese pastry. They consist of a flaky pastry shell filled with a creamy custard made from eggs, sugar, milk, and vanilla. The tarts are baked until the custard is set and the pastry is golden brown. Pastéis de Nata are typically dusted with powdered sugar and cinnamon before serving. They are a sweet and indulgent treat that can be enjoyed any time of the day, whether for breakfast, dessert, or a snack with a cup of coffee.